Alesso's 2015 smash hit "Heroes (Could Be) (feat. Tove Lo)" has been licensed for Earth Hours 2017 'Ten Years of Impact' campaign.

The spot displays the positive affects and spectacular work Earth Hour has achieved in 10 years of operation.

The campaign aired in March and will run for 12 months across free-to-air and pay TV, streaming services and electronic screens.

Watch the clip below: